Phase field approach to heterogeneous crystal nucleation in alloys
نویسندگان
چکیده
James A. Warren,1 Tamás Pusztai,2 László Környei,2 and László Gránásy3 1Metallurgy Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA 2Research Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest, Hungary 3Brunel Centre for Advanced Solidification Technology, Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom Received 25 October 2008; published 15 January 2009
منابع مشابه
Availability Analysis For Heterogeneous Nucleation In A Uniform Electric Field
Industrial demands for more compact heat exchangers are a motivation to find new technology features. Electrohydrodynamics (EHD) is introduced as a promising phenomenon for heat transfer enhancement mechanisms. Similar to any new technology, EHD has not been understood completely yet and requires more fundamental studies. In boiling phase change phenomena, nucleation is the dominant mechanism i...
متن کاملFinding Critical Nuclei in Phase Transformations by Shrinking Dimer Dynamics and its Variants
We investigate the critical nuclei morphology in phase transformation by combining two effective ingredients, with the first being the phase field modeling of the relevant energetics which has been a popular approach for phase transitions and the second being shrinking dimer dynamics and its variants for computing saddle points and transition states. In particular, the newly formulated generali...
متن کاملClassical density functional theory: an ideal tool to study heterogeneous crystal nucleation.
Density functional theory provides an ideal microscopic theory to address freezing and crystallization problems. We review the application of static density functional theory for the calculation of equilibrium phase diagrams. We also describe the dynamical extension of density functional theory for systems governed by overdamped Brownian dynamics. Applications of density functional theory to cr...
متن کاملOverview: Experimental studies of crystal nucleation: Metals and colloids.
Crystallization is one of the most important phase transformations of first order. In the case of metals and alloys, the liquid phase is the parent phase of materials production. The conditions of the crystallization process control the as-solidified material in its chemical and physical properties. Nucleation initiates the crystallization of a liquid. It selects the crystallographic phase, sta...
متن کاملNucleation and bulk crystallization in binary phase field theory.
We present a phase field theory for binary crystal nucleation. In the one-component limit, quantitative agreement is achieved with computer simulations (Lennard-Jones system) and experiments (ice-water system) using model parameters evaluated from the free energy and thickness of the interface. The critical undercoolings predicted for Cu-Ni alloys accord with the measurements, and indicate homo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2009